*{
    margin: 0;
    padding: 0;
}
html{
    background-color: silver;
}
#outter{
    width: 500px;
    height: 570px;
    background-color: #777;
    margin: 50px auto;
    border-radius: 30px;
    padding-top: 30px;
    box-shadow: 5px 5px 5px rgba(77, 77, 77, 0.3);
}
#gameStarBtn{
    text-decoration: none;
    display: block;
    height: 50px;
    line-height: 50px;
    width: 150px;
    text-align: center;
    color: black;
    font-weight: bold;
    background-color: red;
    margin:0 auto;
    border-radius: 10px;
}
#gameStarBtn:hover{
    color: orange;
    background-color: sienna;

}
#wrapper{
    width: 460px;
    height: 460px;
    background-color: #BBADA0;
    margin: 30px auto;
    border-radius: 20px;
    padding:10px;
    display: flex;
    flex-flow: wrap;
    justify-content: space-around;
    align-items: center;
}
#wrapper div{
    width: 100px;
    height: 100px;
    line-height: 100px;
    background-color: #CCC0B2;
    flex-wrap: wrap;
    border-radius: 20px;
}
.box p{
    font-size: 40px;
    text-align: center;
    font-weight: bold;
    color: rgb(7, 83, 83);
}